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NS SAVANNAH 500 FULL POWER HOUR TESTS

The measurements and testing performed on the N.S. Savannah after 500.5 effective full power hours of reactor operation are described. Zero and low power tests were performed at five core temperatures and included (1) determination of critical rod positions; (2) control rod calibration checks; (3) measurement of the temperature and power coefficients of reactivity; and (4) nuclear instrumentation calibration. Although these tests are less detailed and extensive than those previously performed, they provide a substantial basis for assessing core characteristics and the adequacy of related plant operating procedures from the standpoint of both efficiency and safety. The results indicate agreement with expected trends and/or variations in core nuclear characteristics.

Supplemental Notes:

This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number TODD-SML-NSS-7.